-/*!
+/**
* \file
* <!--
+ * This file is part of BeRTOS.
+ *
+ * Bertos is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ *
+ * As a special exception, you may use this file as part of a free software
+ * library without restriction. Specifically, if other files instantiate
+ * templates or use macros or inline functions from this file, or you compile
+ * this file and link it with other files to produce an executable, this
+ * file does not by itself cause the resulting executable to be covered by
+ * the GNU General Public License. This exception does not however
+ * invalidate any other reasons why the executable file might be covered by
+ * the GNU General Public License.
+ *
* Copyright 2001,2004 Develer S.r.l. (http://www.develer.com/)
* Copyright 1999,2000,2001 Bernardo Innocenti <bernie@develer.com>
- * This file is part of DevLib - See devlib/README for information.
+ *
* -->
*
* \brief Kernel configuration parameters
* \author Bernardo Innocenti <bernie@develer.com>
*/
-/*
- * $Log$
- * Revision 1.3 2004/07/30 14:24:16 rasky
- * Task switching con salvataggio perfetto stato di interrupt (SR)
- * Kernel monitor per dump informazioni su stack dei processi
- *
- * Revision 1.2 2004/06/03 11:27:09 bernie
- * Add dual-license information.
- *
- * Revision 1.1 2004/05/23 17:48:35 bernie
- * Add top-level files.
- *
- */
+/*#*
+ *#* $Log$
+ *#* Revision 1.8 2006/07/19 12:56:24 bernie
+ *#* Convert to new Doxygen style.
+ *#*
+ *#* Revision 1.7 2006/02/21 16:05:53 bernie
+ *#* Move from cfg/ to top-level.
+ *#*
+ *#* Revision 1.3 2005/11/04 16:20:01 bernie
+ *#* Fix reference to README.devlib in header.
+ *#*
+ *#* Revision 1.2 2005/04/11 19:10:27 bernie
+ *#* Include top-level headers from cfg/ subdir.
+ *#*
+ *#* Revision 1.1 2005/04/11 19:04:13 bernie
+ *#* Move top-level headers to cfg/ subdir.
+ *#*
+ *#* Revision 1.5 2004/08/25 14:12:08 rasky
+ *#* Aggiornato il comment block dei log RCS
+ *#*
+ *#* Revision 1.4 2004/08/24 16:19:38 bernie
+ *#* Add missing header.
+ *#*
+ *#* Revision 1.3 2004/07/30 14:24:16 rasky
+ *#* Task switching con salvataggio perfetto stato di interrupt (SR)
+ *#* Kernel monitor per dump informazioni su stack dei processi
+ *#*
+ *#* Revision 1.2 2004/06/03 11:27:09 bernie
+ *#* Add dual-license information.
+ *#*
+ *#* Revision 1.1 2004/05/23 17:48:35 bernie
+ *#* Add top-level files.
+ *#*
+ *#*/
#ifndef CONFIG_KERN_H
#define CONFIG_KERN_H
-/*!
+#include <cfg/arch_config.h> /* ARCH_EMUL */
+
+/**
* \name Modules activation
*
* \{
/* Module/option Active Dependencies */
#define CONFIG_KERN_SCHED (1)
#define CONFIG_KERN_SIGNALS (1 && CONFIG_KERN_SCHED)
-#define CONFIG_KERN_TIMER (1 && CONFIG_KERN_SIGNALS)
+#define CONFIG_KERN_TIMER (1)
#define CONFIG_KERN_HEAP (0)
#define CONFIG_KERN_SEMAPHORES (0 && CONFIG_KERN_SIGNALS)
#define CONFIG_KERN_MONITOR (1 && CONFIG_KERN_SCHED)
/* EXPERIMENTAL */
#define CONFIG_KERN_PREEMPTIVE (0 && CONFIG_KERN_SCHED && CONFIG_KERN_TIMER)
-
-#define CONFIG_KERN_HEAPSIZE 0x4000 /*!< Heap size (16KB) */
-#define CONFIG_KERN_QUANTUM 50 /*!< Scheduler time sharing quantum in ticks */
+#define CONFIG_KERN_QUANTUM 50 /**< Time sharing quantum in timer ticks. */
#if (ARCH & ARCH_EMUL)
- #define CONFIG_KERN_DEFSTACKSIZE 65536
+ /* We need a large stack because system libraries are bloated */
+ #define CONFIG_PROC_DEFSTACKSIZE 65536
#else
- #define CONFIG_KERN_DEFSTACKSIZE 128 /*!< Default stack size for each thread */
+ /**
+ * Default stack size for each thread, in bytes.
+ *
+ * The goal here is to allow a minimal task to save all of its
+ * registers twice, plus push a maximum of 32 variables on the
+ * stack.
+ *
+ * The actual size computed by the default formula is:
+ * AVR: 102
+ * i386: 156
+ * ARM: 164
+ * x86_64: 184
+ *
+ * Note that on most 16bit architectures, interrupts will also
+ * run on the stack of the currently running process. Nested
+ * interrupts will greatly increases the amount of stack space
+ * required per process. Use irqmanager to minimize stack
+ * usage.
+ */
+ #define CONFIG_PROC_DEFSTACKSIZE \
+ (CPU_SAVED_REGS_CNT * 2 * sizeof(cpustack_t) \
+ + 32 * sizeof(int))
#endif
+/* OBSOLETE */
+#define CONFIG_KERN_DEFSTACKSIZE CONFIG_PROC_DEFSTACKSIZE
+
/* Memory fill codes to help debugging */
#if CONFIG_KERN_MONITOR
- #define CONFIG_KERN_STACKFILLCODE 0xA5A5
- #define CONFIG_KERN_MEMFILLCODE 0xDBDB
+ #include <cpu/types.h>
+ #if (SIZEOF_CPUSTACK_T == 1)
+ /* 8bit cpustack_t */
+ #define CONFIG_KERN_STACKFILLCODE 0xA5
+ #define CONFIG_KERN_MEMFILLCODE 0xDB
+ #elif (SIZEOF_CPUSTACK_T == 2)
+ /* 16bit cpustack_t */
+ #define CONFIG_KERN_STACKFILLCODE 0xA5A5
+ #define CONFIG_KERN_MEMFILLCODE 0xDBDB
+ #elif (SIZEOF_CPUSTACK_T == 4)
+ /* 16bit cpustack_t */
+ #define CONFIG_KERN_STACKFILLCODE 0xA5A5A5A5UL
+ #define CONFIG_KERN_MEMFILLCODE 0xDBDBDBDBUL
+ #elif (SIZEOF_CPUSTACK_T == 8)
+ /* 16bit cpustack_t */
+ #define CONFIG_KERN_STACKFILLCODE 0xA5A5A5A5A5A5A5A5UL
+ #define CONFIG_KERN_MEMFILLCODE 0xDBDBDBDBDBDBDBDBUL
+ #else
+ #error No cpustack_t size supported!
+ #endif
#endif
-
#endif /* CONFIG_KERN_H */
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